A later step in glycolysis is catalyzed by the enzyme aldolase: fructose-1,6 bis

Question

A later step in glycolysis is catalyzed by the enzyme aldolase: fructose-1,6 bisphosphate doubleheadarrow dihydroxy acetone phosphate + glyceraldehyde-3-phosphate or FBP doubleheadarrow DHAP + GAP. For this reaction, G degree = 23. 8 kJ/mol. Under physiological conditions in a red blood cell, [FBP] = 35 mu Mu, [DHAP] = 130 mu Mu and [GAP] = 15 mu Mu. Is the reaction spontaneous at 298K under these conditions? In some cells, the enzyme triose phosphate isomerase is not functional. In these cells, the level of DHAP can be much higher than the concentrations reported in part A. What is AG for the reaction (at 298K) if [FBP] - 35 mu Mu, [DHAP] - 1 mM and [GAP] = 3. 5 MuMu? Would you expect the cell described in part (b) to live?

Explanation / Answer

a)spontaneous

c)yes

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